1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Tom [10]
2 years ago
10

Robert says 12 divide by 3//4 = 9. He used the following steps: 12/1 × 3/4 = 36/4 What error did Robert make? A. Robert used sub

traction rather than multiplication. B. Robert used addition rather than multiplication. C. Robert forgot to find the reciprocal of before multiplying. D. Robert forgot to find the reciprocal of before multiplying.
Mathematics
1 answer:
wlad13 [49]2 years ago
8 0

Answer:

C and D are the same answers but one of those.

Step-by-step explanation:

Um, I got what Robert got, so by process of elimination, it must be C or D. I used multiplication, so it wasn't subtraction or addition. Meaning whatever a reciprocal is, I didn't do that.

You might be interested in
Pls answer thissssssss
Lerok [7]

Answer:

Area of room = 21 * 16

= 336 m²

Area of Carpet = (21 - 1)* (16-1)

= 20*15

= 300

Area of border = Area of room - Area of carpet

= 336 - 300

<h3>= 36 m².</h3>
4 0
1 year ago
Find the area. Simplify the answer. 3x and x+6
Ilya [14]
18x .......,,,,..xbxncmd
5 0
3 years ago
Since the area under the normal curve within two standard deviations of the mean is 0.95, the area under the normal curve that c
alukav5142 [94]

Answer:

X \sim N (\mu ,\sigma)

And for this case we know this condition:

P(\mu-2\sigma

By the complement rule we know that:

P(X< \mu -2\sigma \cup X>\mu +2\sigma) = 1-0.95=0.05

But since the distribution is symmetrical we know that:

P(X\mu +2\sigma) = 0.025

So then the statement for this case is FALSE.

b. False

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

For this case if we define the random variable of interest X and we know that this random variable follows a normal distribution:

X \sim N (\mu ,\sigma)

And for this case we know this condition:

P(\mu-2\sigma

By the complement rule we know that:

P(X< \mu -2\sigma \cup X>\mu +2\sigma) = 1-0.95=0.05

But since the distribution is symmetrical we know that:

P(X\mu +2\sigma) = 0.025

So then the statement for this case is FALSE.

b. False

5 0
3 years ago
Could you help me with one of them please?
vivado [14]

Answer:

The answer to number seven is 420 km.

3 0
2 years ago
Which situation CANNOT be represented by this equation? 3x – 5 = 25 Clay has 25 marbles to trade for some of Mark's baseball car
Flura [38]
<span>Clay has 25 marbles to trade for some of Mark's baseball cards. If Clay makes the trade today, Mark will give him a discount of 3 marbles. If each card is worth 5 marbles, how many baseball cards, x, will Clay get? 

^^ That is the situation that does NOT represent the equation 
</span><span /><span>
</span>
4 0
2 years ago
Read 2 more answers
Other questions:
  • Given the straight libe MN = NP with M(12,-3) and N(-2,9), calculate the coordinates of P.​
    9·1 answer
  • What is the value of x? *<br> 60<br> 35<br> 25<br> 5
    12·2 answers
  • A deposit of 8000 at 9.5% for 120 days
    10·1 answer
  • A B C Or D? Look at picture
    11·1 answer
  • A college wants 950 entering freshman. Experience shows that about 75% of admitted students accept. The college admits 1200 stud
    6·1 answer
  • Which translation is used to map triangle ABd onto triangle IGH?
    8·1 answer
  • In Linda’s class of 20 students 14 of the students will practice for the school play. What percent of the class will practice fo
    10·1 answer
  • I'M IN A TEST!!!! PLEASE HELP BUT PLEASE DON'T GUESS!!!!
    9·2 answers
  • What happens to a number when it is divided by 2/3
    12·2 answers
  • Solve for x: x-10= -12
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!